Car-truck.



No. 648,030. Patented Apr. 24, I900. M. [BL-HUBBARD, In.

GAR TRUCK. (Application filed m 7, 1597.

2 Sheets-Sheet I.

(In mm.)

THE NORRIS PETERS co. mmourna. WASHINGTON, u, c.

Patented Apr. 24, 1900.

m. a. HUBBARD, 13. CAR TRUCK.

(Application filed May 7, 1897.)

2 Sheets-Sheet 2.

(No Model.)

\lllllilll NITED ATENT Eric.

MOSES G. HUBBARD, JR, OF AUSTIN, ILLINOIS, ASSIGNOR TO THE MCGUIREMANUFACTURING COMPANY, OF CHICAGO, ILLINOIS.-

CAR-TRUCK.

SPECIFICATION forming part of Letters Patent No. 648,030, dated April24:, 1900. Application filed May 7,1897. Serial No. 635,505. N 11105613T0 aZZ whom it may concern.-

Be it known that LMosns G. HUBBARD, Jr. a citizen of the UnitedStates,residing in Austin, in the county ofICook and State of Illinois,have invented certain new and useful Improvements in Oar-Trucks, ofwhich the following is a specification.

My invention relates to car-trucks, and has to do particularly withtrucks in which the car-body is arranged to move laterally of the truck.

It has for its object to provide means Whereby such lateral movement ofthe car-bodyis elastically resisted and the car-body returned to itsnormal position when the extraordinary strain causing such lateralmovement ceases.

In the accompanying drawings, wherein I have shown my improvementsapplied to a truck in which a laterally-movable bolster is provided toreceive the car body, such bolster being elastically supported upon anequalizer-frame resting upon and supported by the axle-journal boxes,which truck forms the subject-matter of a joint application of even dateherewith byVVilliam A. McGuire and myself, Figure l is a side elevationof a truck embodying my improvements. Fig. 2 is a partial cross-sectionon line 2 2 of Fig 1. Fig. '3 is a section of the upper member of thepedestal on line 3 3 of Fig. 5. Fig. 4 is a vertical section on line 4 4of Fig. 3. Fig. 5 is a bottom View of the upper member of the pedestal.Fig. 6 is a cross-section of the upper rocker-plate. Fig. 7 is a sideelevation of a portion thereof. Fig. 8 is a section of the lower memberof the pedestal on line 8 S of Fig.10. Fig. 9 is a cross-section on line9 9 of Fig. 8. Fig. 10 is abottom view of the lower member of thepedestal. Fig. 11 is a section of the lower rocker-plate on line 11 11of Fig. 12. Fig. 12 is a section on line 12 12 of Fig. 11.

As described in the McGuire and Hubbard application above referred to,the truck illustrated in Figs. 1 and 2 comprises the usual wheels andaxles 13 14, respectively, and equalizer-frame 15,which rests upon theaxlejournal boxes 16 and is supported by springs 17. The arrangement ofthe supportingsprings 17 as herein shown is slightly difrocker-plates 21are provided on their under sides with bifurcations adapted to receivethe axle-journal boxes, and said rocker-plates are sufficiently narrowso that the lateral movement of said plates upon the journalboxes is notinterfered with.

The car-body-supporting frame is supported upon the equalizer-frame byspiral springs 22, as'shown in Fig. 1, and elliptical springs 23 betweenthe spiral springs. The spiral springs rest upon the depressed portionof the equalizer-frame and support the rockerplates 21. The ellipticalsprings 23 are mounted between upper and lower pedestal members 24 25,respectively, which pedestal members telescope one within the other, asshown in Fig. 2, the upper member preferably being arranged to fit intothe lower member. As shown in Figs. 2 and 3, the rockerplates 21 areprovided on their under sides with rocker-bearings 26, which mesh. withcorresponding rocker-bearings 27 on the upper side of the upper pedestalmember 24. Similarly the lower pedestal member is provided on its undersurface with a rockerbearing 28, which meshes with a rocker-bearing 29on the upper surface of the lower rocker-plate 30, which is secured tothe equalizer-frame 15. In the drawings the side members of theequalizer-frame 15 are shown as being made in two parts, so that thelower rocker-plate 3O fits between said side members and is secured inplace by a bolt 81, as shown in Fig. 2.

By the construction above described when the bolster is moved laterallyunder the inertia of the car-body the upper rocker-plate 21 will causethe upper pedestal member 24 to rock, which motion will be transmittedthrough the pedestal-legs and the springs 23 to the lower pedestalmember 25, so that if the bolster were to move in the directionindicated by the arrow in Fig. 2 the pedestal as a whole there shownwould rock upon the inner edge of the upper bearing and the outer edgeof the lower bearing. Such rocking of the pedestal would result eitherin the raising of the load or the compression of the springs 23, andconsequently the tendency to rock is resisted by the springs. WVhen theinertia of the car-body is overcome, the springs by their resilience actto return it to its normal position. Instead of using ellipticalsprings, as shown, springs of other suitable forms may be used, such asspiral springs, either singly or in groups, or where elliptical springsare used instead of locating them longitudinally of the truck they maybe located transversely thereof, provided they are so arranged as to becompressed under lateral movement of the car-body.

It will be seen that the upper and lower pedestalmembers,respectively,form a springcap and spring-seat and that they areconstructed to move independently of each other in a vertical direction,but to move together in a lateral direction.

I have described my invention in detail, but do not wish to be limitedto the specific construction shown, as various modifications may be madewithout departing from my inventiou.

That which I claim as my invention, and desire to secure by LettersPatent, is-

1. In a car-truck, a spring-seat and spring cap constructed to moveindependently of each other in a vertical direction but to move togetherin a lateral direction, in combination with a spring, and with upper andlower bearings for said seat and cap constructed to cause the spring tobe compressed or the load raised when said upper and lower bearings aremoved laterally with relation to each other, substantially as described.

2. In acar-truck,the combination of springs for supporting the car,bearings interposed between the springs and the load, and bearingsinterposed between the springs and their support, both of said bearingsbeing automatically adjustable to further compress said springs or toraise the car-body, or both, when the car-body moves laterally inrelation to the wheels, substantially as described.

3. In a cartruck, the combination of a spring-supportedlaterally-movable bolster, springs for supporting said bolster, andupper and lower rocking bearings arranged respectively above and belowsaid springs for resisting lateral movement of said bolster andreturning it to its normal position, substantially as described.

4. In a truck, a spring-seat and spring-cap, and one or more springs,said seat and cap each having a pair of rocker-bearings constructed tocompress said springs or raise the load when said bearings are movedlaterally with reference to each other, substantially as described.

5. In a car-truck, the combination of a laterally-movable car-bodysupport, and rockerbearings therefor which act to resist lateralmovement of said support, each of said bearings'being arranged to rockwhen the carbody support moves laterally so as to furnish upper andlower points of support for the carbody which lie at opposite sides of avertical plane passing through the axis of rotation of the bearing,substantially as described.

6. In a car-truck, the combination of a laterally-movable car-bodysupport, supportingsprings therefor and upper and lower bearings whichresist lateral movement of said support, said bearin gs being arrangedrespectively above and below said springs, substantially as described.7. In a car-truck, the combination with a laterally-movable car-bod ysupportin g frame, of rocking spring-supports for said car-bodysupportingframe, the springs of said supports being put under increased tension bythe rocking thereof, and means for rocking said supports when thecar-body-supporting frame moves laterally, substantially as described.

8. In a car-truck, the combination with a laterally-movable car-bodysupport, of upper and lower pedestal members telescopically arranged,rocker-bearings therefor, and one or more springs between said pedestalmembers, substantially as described.

9. In a car-truck, the combination with a laterally-movablecar-body-supporting frame, of upper and lower pedestal members, upperand lower rocker-plates engaging said upper and lower pedestal membersrespectively, said upper rocker-plate being connected to thecar-body-supporting frame, and means independent of thecar-body-supporting frame for supporting said lower rocker-plate,substantially as described.

10. In a car-truck, the combination with a laterally-movablecar-body-supporting frame, of upper and lower pedestal memberstelescopically arranged, upper and lower rockerplates engaging saidupper and lower pedestal members respectively, said upper rockerplatebeing connected to the car-body-supporting frame, and means independentof the car-bod y supporting frame for supporting said lowerrocker-plate, substantially as described.

11. In a car-truck, the combination witha laterally-movablecar-body-supporting frame,

and an equalizer-frame upon which said carbody-supporting frame ismounted, of upper and lower pedestal members telescopically arranged,and upper and lower rocker-plates engaging said upper andlower pedestalmembers respectively, said upper rocker-plate being connected to the carbody supporting frame, and said lower rocker-plate being sup ported bysaid equalizer-frame, substantially as described.

12. In a car-truck, the combination With springs forsupportingthecar-body, of upper and lower bearings for said springs, and means foroperating said bearings to compress said springs When the car-body moveslaterally, substantially as described.

13. In a car-truck, alaterally-movable bolster, in combination withsprings for supporting said bolster, said springs having upper and lowerrocker-bearings constructed to oifer an elastic resistance to thelateral move ment of said bolster for the purposes substantially asdescribed.

14:. In a car-truck, alaterally-movable bolster, in combination withyielding supporting mechanism therefor, arranged at opposite sides ofthe truck and constructed to offer an elastic resistance to the lateralor vertioal movement of said bolster for the purposes substantially asdescribed.

15. In a car-truck, a laterally-movable bolster, in combination withvertically-disposed supporting -springs mounted in upper and lowerrocker-bearings, constructed to cause said springs to offer an elasticresistance to the Vertical or lateral movement of said bolster,substantially as described.

16. In a car-truck, the combination of side bars supported from theaxle-journal boxes, a laterally-movable bolster, spring-supportedtherefrom, and mechanism for permitting the lateral movement of saidbolster in relation to said side bars, consisting of thesupporting-springs for said bolster, and rocker-bearings for saidsprings, substantially as described.

17. In a car-truck, the combination of side bars supported from theaxle-journal boxes, a bolster, spring-supported therefrom, and mechanismfor permitting a lateral movement of said bolster in relation to saidside bars, consisting of said bolster-springs, and doublerocker-bearings for said springs constructed to return said bolster. toits normal position in relation to said side bars, substantially asdescribed.

MOSES G. HUBBARD, JR.

Witnesses:

JOHN L. J AOKSON, NELLIE MOKIBBEN.

